Unlike some products that need to be pushed into the ear canal to perform as intended, Bose® in-ear headphones are designed to rest comfortably in the concha, the bowl of the ear just outside the ear canal. Because of this, they may feel different at first from what listeners are accustomed to. The soft silicone ear tip barely contacts the opening to the ear canal; it provides just enough contact to secure the headphones in place comfortably without forming a tight, isolating seal.
Bose® in-ear headphones are packaged with medium-sized silicone ear tips installed; small- and large-sized ear tips are also included in the package.
The headphones should be pushed into the ear far enough to establish a secure fit but not so far that they become uncomfortable. Some users may find that the small or large sizes provide a more appropriate fit. It is also possible that some listeners may prefer different sizes of ear tips for each ear.
Larger sizes of ear tips may be preferable if listeners plan to use them during certain activities, such as exercise. One size larger ear tip may offer a little more contact with the ear, enhancing stability.
We encourage each user to experiment with the different ear-tip sizes until finding the combination that works best for them.

Changing the ear tips on the Bose® in-ear headphones

Gently remove the existing ear tip by peeling up from its large rounded side.

Align the triangle on the replacement ear tip with the triangle on the headphone.

Press the ear tip securely into place until you feel it latch. The large rounded side of the ear tip should completely cover the triangle on the headphone.